A hierarchical qualitat ive spat ial representat io n and reasoning appr oach w as proposed bySanjiang Li and Bernhard N obel. In this art icle, under f ix ed reso lut ion, w e ex pand and complement<br> this spat ial representat ion and reasoning approach to determine the mer eo logical ( part / w hole )<br> relat ions betw een tw o ro ug h reg io ns. In part icular, w e discuss reaso ning issue w hen the low er<br> approx imat ion is zero. We complete the theorem w hich determines the de
